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V-Lab

NX Filtration N.V. GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

40.46%

increased by 1.37%

1 Week

43.83%

increased by 4.74%

1 Month

54.98%

increased by 15.89%

Analysis last updated: Wednesday, September 16, 2026 at 05:36 PM UTC

Date Range:

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graph of NX Filtration N.V. GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 15, 2021 to Sep 14, 2026
Extended Optimization

Model Insight

With persistence 0.995, volatility shocks have a half-life of 149 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.91 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.995, shock half-life ~149 daysv = 2.91 · fat tails
ParamValuet-stat
ωconst128.6231
1.31
αARCH0.1856
17.38***
βGARCH0.9954
308.54***
νDF2.9109
15.87***

0.995

Persistence

149d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

128.6231
1.31
α

ARCH

Response to squared shocks

0.1856
17.38***
β

GARCH

Volatility persistence

0.9954
308.54***
ν

DF

Student-t tail thickness

2.9109
15.87***

Persistence:

0.995

Half-life:

149 days